Range Hood

ABSTRACT

The present invention provides a range hood comprising a casing, a partition plate, a motor, a fan, a protective net, a filter screen, a fixation holder and a screen cover, characterized in that said fixation holder configured under said filter screen has one end pivotally connected with a hollow joint of said partition plate inside the bottom portion of said casing, the other end clasped with a resilient hooked plate of said partition plate, and a middle section holding said filter screen. Therefore, the present invention provides a function that said filter screen may be secured and replaced not only easily but also quickly.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a range hood, more specifically, to arange hood that provides a filter screen which may not only be securedeasily but also be replaced quickly.

2. Description of the Prior Art

The A range hood is a sort of kitchen equipment for removing airbornegrease, combustion products, fumes, steam and odors produced from indoorcooking. A prior art range hood generally contains a casing, at leastone motor, at least one fan and a protective net; wherein said motor isconfigured inside the casing, and the drive axle of said motor isconnected with the center of said fan to drive said fan to rotate sothat said fan may axially suck fumes, and then, by the centrifugalforce, the fumes may be exhausted; wherein said protective net isarranged under the fume inlet so as to prevent the users from stretchingtheir hands into the fan to keep safe. When in use, said fan may rotateat high speed to produce suction force so as to upwards extract thefumes thereunder, and thus the fumes may be removed through the fumeoutlet. In order to increase the fume-exhaust filtering efficiency,certain of prior art range hoods are provided with an activated carbonfilter screen for filtering and purifying fumes; wherein the activatedcarbon filter screen is arranged under the aforesaid protective net, sothat the fumes may be exhausted through the aforementioned filter screenwhich may absorb and purify the fumes; thus, the fumes may even exhaustindoors instead of being removed outside after being filtered andpurified.

However, said prior art range hoods have certain drawbacks described asfollows: it is not convenient for the users to change; when said priorart activated carbon filter screen needs to be replaced, it cannot bedetached without tools; moreover, said casing easily gathers oil stainsso that the users may get their hands dirty with oil stains when theactivated carbon filter screen is replaced. Thus, replacing said priorart activated carbon filter screen becomes not only inconvenient butalso time consuming. It is against the background and the drawbacksassociated therewith that the present invention has been developed.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a range hood providedwith a filter screen that may not only be secured easily but also bereplaced quickly.

In order to achieve the aforementioned objective, the present inventioncharacterized in that said fixation holder configured under said filterscreen has one end pivotally connected with a hollow joint of saidpartition plate inside the bottom portion of said casing, the other endclasped with a resilient hooked plate of said partition plate, and amiddle section holding said filter screen. Therefore, the presentinvention provides a function that said filter screen may be secured andreplaced not only easily but also quickly.

BRIEF DESCRIPTION OF THE DRAWINGS

In order that the present invention may be more fully understood, apreferred embodiment thereof will now be described with reference to theaccompanying drawings, in which:

FIG. 1 is a stereogram of the range hood according to the preferredembodiment of the present invention.

FIG. 2 is a stereogram showing the range hood viewed from another angleaccording to the preferred embodiment of the present invention.

FIG. 3 is a breakdown drawing of the range hood according to thepreferred embodiment of the present invention.

FIG. 4 is an upward view of the combination that the fixation holderholds the filter screen according to the preferred embodiment of thepresent invention.

FIG. 4 a is a sectional view of 4 a-4 a shown in FIG. 4.

FIG. 4 b is a sectional view of 4 b-4 b shown in FIG. 4.

FIG. 5 is a sectional view of 5 s-5 s shown in FIG. 4.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The means for achieving the aforesaid objective and the functions of thepresent invention will become apparent from the following description,taken in connection with the accompanying drawings, wherein a preferredembodiment of the present invention is disclosed.

Referring to FIGS. 1 to 3, the range hood disclosed in the presentinvention comprises as follows:

A casing 1 has a concave hollow bottom portion of which the interior isarranged with a partition plate 2 to form a hollow chamber 10. The topsurface of said casing 1 and the back plate la of said casing 1 arerespectively provided with a fume outlet 11 connecting said chamber 10.Said outlet 11 may be opened or closed according to the work area wherethe range hood is mounted and the needs of the users. However, one ofsaid fume outlets 11 must keep open. The bottom surface of saidpartition plate 2 is provided with a fume inlet 20.

A motor 3, of which the top surface is fixed to the aforementionedcasing 1, is provided with a drive axle 30 secured to the center of afan 4; said fan 4 is configured inside the aforementioned chamber 10 andhas a bottom end corresponding to said fume inlet 20. When rotating,said fan 4 may axially suck fumes into said chamber 10, and then, by thecentrifugal force, the fumes may be exhausted through said fume outlet11.

A protective net 5 arranged under said fume inlet 20, is provided withan outer margin fastened to the bottom surface of said partition plate2.

A filter screen 6, which is an activated carbon filter screen forabsorbing, filtering and purifying fumes, is arranged under saidprotective net 5.

A fixation holder 7, fashioned into the shape of a trapezoid andconfigured under said filter screen 6, provides a bottom base 70 whichhas two sides respectively disposed with a pivot pin 71 protrudingoutward so as to be pivotally connected with a hollow joint 21 of saidpartition plate 2; wherein, said hollow joint 21 and the body of saidpartition plate 2 are formed in an integral stamping mode. Moreover,said fixation holder 7 is also provided with a top base 72 clasped witha resilient hooked plate 22 of said partition plate 2. Said resilienthooked plate 22, having a curved shape, is formed with the body of saidpartition plate 2 in an integral stamping mode. Wherein, the back ofsaid resilient hooked plate 22 is arranged toward said joint 21. Themiddle section 73 of said fixation holder 7 may hold said filter screen6.

A screen cover 8, configured under said filter screen 6, as shown inFIG. 5, has one end placed onto a folded lip lb of the bottom margin ofsaid the back plate 1 a; wherein said folded lip 1 b is flat foldedtoward the inner side of the casing 1. Moreover, the other end of saidscreen cover 8 is arranged with a retractable pin 80 allowed to extendoutwards to be inserted into a hole of said casing 1 so that said screencover 8 may be secured to said casing 1. Wherein, said retractable pin80 is controlled by a hand-pull plate 81 to be able to withdraw inwardsso as to be unfastened.

Referring to FIG. 2, FIG. 4 and FIG. 5, the range hood disclosed in thepresent invention includes the aforementioned members. When the rangehood is in use, said fan 4 may rotate at high speed to produce suctionforce so as to upwards extract the fumes thereunder. The fumes may passsaid screen cover 8 and said filter screen 6 so as to allow the fumes tobe absorbed, filtered and purified; the filtered and purified fumes mayenter the chamber 10 through said protective net 5 and said fume inlet20, and then the fumes may be removed through said fume outlet 11. Saidfume outlets 11 may be opened or closed according to the work area wherethe range hood is mounted and the needs of the users. If the filteredfumes are exhausted indoors, a fume filter arrangement may be configuredat said fume outlet 11 to increase the filtering efficiency.

When said filter screen 6 needs to be replaced, the user may pull saidtop base 72 of said fixation holder 7 outward to enable said top base 72to detach from the resilient hooked plate 22 of said partition plate 2so as to allow said middle section 73 of said fixation holder 7 torelease said filter screen 6, and thus the user may take down saidfilter screen 6 and replace it with a new filter screen; next, the usermay turn said top base 72 of said fixation holder 7 to clasp saidresilient hooked plate 22 of said partition plate 2 so as to fix the newfilter screen 6. Therefore, the present invention provides a functionthat said filter screen 6 may be secured and replaced not only easilybut also quickly.

Moreover, the bottom surface of the partition plate 2 disposed in arange hood may be arranged with two or more than two fume inlets 20. Asmentioned above, a protective net 5, a filter screen 6, a fixationholder 7, and a screen cover 8 may be arranged in sequence under each ofsaid fume inlets 20. The structures of said members and the assemblingmode thereof are also the same as the mentioned above.

It will be appreciated by those skilled in the art that variations andmodifications to the invention described herein will be apparent withoutdeparting from the spirit and scope thereof. The variations andmodifications as would be apparent to persons skilled in the art aredeemed to fall within the broad scope and ambit of the invention asherein set forth.

What is claimed is:
 1. A range hood comprising: a casing having a bottomportion arranged with a partition plate partitioning off the interior ofsaid casing as a hollow chamber, and a top surface arranged with atleast one fume outlet connecting said chamber, wherein said partitionplate is provided with a fume inlet corresponding to said chamber; amotor having a top surface fixed to said casing provided with a driveaxle secured to the center of a fan, and wherein said fan is configuredinside said chamber and corresponds to said fume inlet ; a protectivenet which is arranged under said fume inlet and which is provided withan outer margin fastened to the bottom surface of said partition plate;a filter screen arranged under said protective net for absorbing,filtering and purifying fumes; a fixation holder configured under saidfilter screen, having one end pivotally connected with a joint of saidpartition plate, the other end clasped with a resilient hooked plate ofsaid partition plate, and a middle section holding said filter screen;and a screen cover configured under said filter screen having two endsrespectively secured to said casing.
 2. The range hood as claimed inclaim 1, wherein said fixation holder is in the shape of a trapezoidprovided with a bottom base having two sides respectively disposed witha pivot pin protruding outward for inserting into said hollow joint ofsaid partition plate so as to enable the both to be pivotally connectedwith each other, and a top base clasped with a resilient hooked plate ofsaid partition plate; wherein said resilient hooked plate has a curvedshape and the back thereof is arranged toward said joint.
 3. The rangehood as claimed in claim 2, wherein said hollow joint and said resilienthooked plate are formed with the body of said partition plate in anintegral stamping mode
 4. The range hood as claimed in claim 3, whereinsaid filter screen is an activated carbon filter screen.
 5. The rangehood as claimed in claim 4, wherein a back plate arranged to said casingmay also be disposed with said fume outlet; wherein said fume outletsconfigured to said back plate and the top surface of said casing may beopened or closed according to the work area where the range hood ismounted and the needs of the users.
 6. The range hood as claimed inclaim 5, wherein a fume filter arrangement may be configured at saidfume outlet to increase the filtering efficiency if the filtered fumesare exhausted indoors.
 7. The range hood as claimed in claim 2, whereinsaid screen cover has one end placed onto a folded lip of the bottommargin of said the back plate, and the other end arranged with aretractable pin allowed to extend outwards to be inserted into a hole ofsaid casing so as to be secured to said casing; wherein said folded lipis flat folded toward the inner side of the casing, and moreover saidretractable pin is controlled by a hand-pull plate to be able towithdraw inwards so as to be unfastened.